What’s on your Glen Cove assessment
The New York State assessment roll lists every taxable parcel in Glen Cove, Nassau County. For each parcel you’ll find:
- Full Market Value — what the assessor says the property is worth (compare to recent sales of similar nearby homes)
- Assessment — the taxable value (in Nassau, this is 10% of market value via the Level of Assessment; in Suffolk, this is closer to actual market value)
- Property Class — ORPTS code (210 = single family, 220 = two family, 411 = apartment, etc.)
- Section / Block / Lot (SBL) — your parcel’s unique ID
- School District — which of LI’s 121 districts you’re in
- Existing exemptions — STAR, Senior, Veteran, Volunteer Firefighter, etc., already applied to the seller’s bill
Median full market value in Glen Cove: $273,000.
Grievance — Glen Cove
Current Nassau grievance deadline: March 31, 2027 for the 2028/29 tax year.
Long Island homeowners who file a grievance see an average 5–15% reduction in assessed value — which translates roughly 1:1 to annual tax savings. The filing itself is free; firms typically work on contingency (50% of the first-year savings).
Official links
- City of Glen Cove — Department of Finance — https://glencoveny.gov/department/department-of-finance/ — pay your bill, see due dates, request copies
- Nassau Assessment Review Commission (ARC) — www.nassaucountyny.gov/1510/Assessment-Review-Commission — file a grievance, AR1 form, ARC hearings
- NY State assessment data portal — data.ny.gov — raw parcel-level data (we re-index this annually)
- Nassau Land Records Viewer (LRV) — lrv.nassaucountyny.gov — deeds, mortgages, parcel maps
Glen Cove assessment FAQs
How often does Glen Cove reassess properties?
Nassau County reassesses every property every year. Each January, ARC publishes the Tentative Assessed Value for the upcoming tax year. If you disagree, you grieve by March 31, 2027.
How do I find my exact assessment without using this site?
Visit Nassau’s Land Records Viewer (LRV) at lrv.nassaucountyny.gov and search by address or SBL.
Is the data on this site the official assessment?
We mirror the official NY State assessment roll annually. For closing, escrow, or legal purposes, always verify with your county or town receiver of taxes.
My address shows the wrong town. Why?
USPS ZIP boundaries don’t match town/village boundaries. Many parcels have a ZIP-implied town that differs from the actual taxing jurisdiction (e.g. a Manhasset address in the Town of North Hempstead). The town shown for grievance purposes is whichever taxing jurisdiction your parcel sits in.
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Sources and citations
- NY State Open Data — Property Assessment Data data.ny.gov
- NY Tax & Finance — Contest your assessment tax.ny.gov
- Nassau County Assessment Review Commission nassaucountyny.gov
Last verified May 11, 2026. Tax rules change; we re-check every page each quarter.
Educational content and estimates only, not legal, tax or financial advice. Verify with your county or town receiver, an attorney or a CPA before making financial decisions.